1020423202031 has 4 divisors (see below), whose sum is σ = 1037718510600. Its totient is φ = 1003127893464.

The previous prime is 1020423202013. The next prime is 1020423202033. The reversal of 1020423202031 is 1302023240201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020423202031 - 2¹⁴ = 1020423185647 is a prime.

It is a super-2 number, since 2×1020423202031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020423201994 and 1020423202012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020423202033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8647654196 + ... + 8647654313.

It is an arithmetic number, because the mean of its divisors is an integer number (259429627650).

Almost surely, 2^{1020423202031} is an apocalyptic number.

1020423202031 is a deficient number, since it is larger than the sum of its proper divisors (17295308569).

1020423202031 is an equidigital number, since it uses as much as digits as its factorization.

1020423202031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17295308568.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1020423202031 its reverse (1302023240201), we get a palindrome (2322446442232).

The spelling of 1020423202031 in words is "one trillion, twenty billion, four hundred twenty-three million, two hundred two thousand, thirty-one".